#98 aibolit.P21 (var in the middle) fixed in Directives

src/main/java/org/xembly/Directives.java

@@ -88,11 +88,6 @@
     )
 public final class Directives implements Iterable<Directive> {
 
-    /**
-     * Right margin.
-     */
-    private static final int MARGIN = 80;
-
     /**
      * List of directives.
      */
@@ -125,22 +120,7 @@ public Directives(final Iterable<Directive> dirs) {
 
     @Override
     public String toString() {
-        final StringBuilder text = new StringBuilder(0);
-        int width = 0;
-        int idx = 0;
-        for (final Directive dir : this.all) {
-            if (idx > 0 && width == 0) {
-                text.append('\n').append(idx).append(':');
-            }
-            final String txt = dir.toString();
-            text.append(txt).append(';');
-            width += txt.length();
-            if (width > Directives.MARGIN) {
-                width = 0;
-            }
-            ++idx;
-        }
-        return text.toString().trim();
+        return new Print(this.all).toString();
     }
 
     @Override

src/main/java/org/xembly/Print.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2013-2020, xembly.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met: 1) Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer. 2) Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution. 3) Neither the name of the xembly.org nor
+ * the names of its contributors may be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
+ * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.xembly;
+
+/**
+ * It prints directives in one line.
+ *
+ * @since 0.25
+ */
+final class Print {
+
+    /**
+     * Right margin.
+     */
+    private static final int MARGIN = 80;
+
+    /**
+     * List of directives.
+     */
+    private final Iterable<Directive> all;
+
+    /**
+     * Public ctor.
+     * @param dirs Directives
+     */
+    Print(final Iterable<Directive> dirs) {
+        this.all = dirs;
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder text = new StringBuilder(0);
+        int width = 0;
+        int idx = 0;
+        for (final Directive dir : this.all) {
+            if (idx > 0 && width == 0) {
+                text.append('\n').append(idx).append(':');
+            }
+            final String txt = dir.toString();
+            text.append(txt).append(';');
+            width += txt.length();
+            if (width > Print.MARGIN) {
+                width = 0;
+            }
+            ++idx;
+        }
+        return text.toString().trim();
+    }
+
+}